Femtosecond Spin Dynamics Mechanism In Graphenes: The Bloch NMR-Schrödinger Probe

Authors

  • Moses E. Emetere Department of Physics, Covenant University Canaan land, P.M.B 1023, Ota, Nigeria
  • Bijan Nikouravan Department of Physics, Faculty of Science, Islamic Azad University (IAU), Varamin, Iran

DOI:

https://doi.org/10.14331/ijfps.2014.330073

Keywords:

femtosecond spin dynamics, Schrödinger, Bloch NMR, spin relaxation

Abstract

The mechanism of the femtosecond spin dynamics is still not properly understood. The remodeled Bloch-Schrödinger equation was incorporated into the Hamiltonian. The mechanism of the femtosecond dynamics was investigated under three quantum states. The spin relaxation mechanism operated in a single continuous time scale (>70ps) which was in variance with known postulate. The transient reflectivity was measured to be within an angular range of 18.6o to 90.0o at a pulse range of 1MHz to 6.5 MHz. Beyond the pulse intensity of -2.5, the system elapsed into a quasi-equilibrium state which explains the independence of the magnetic moment on the pulse intensity. Different possibilities of the femtosecond spin dynamics were worked out for future study.

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Published

2014-12-30

Issue

Vol. 4 No. 4 (2014): IJFPS

Section

ORIGINAL ARTICLES

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